Stella 2.0 contains support for Bob Colbert's Cheetah cheat codes, as +well as an extended Stella-specific type of cheat code that works on +bankswitched ROMs.
+ +To enter a cheat code, press Ctrl-C during emulation to bring up +the Cheat dialog, and enter your code there. Press Enter when done, +or Escape to abort if you change your mind.
+ +Cheetah codes are explained in detail on Bob Colbert's web page, along +with a list of codes for various games:
+ +http://members.cox.net/rcolbert/
+ +Briefly:
+ ++ 6-digit (cheetah) code: aaaddc + aaa = address - $f000 + dd = data + c = count - 1 ++ +
Cheetah codes don't support bankswitched ROMs, so they only work for +2K or 4K ROMs.
+ +Stella's extended cheats are similar to Cheetah codes, except that +they can be 7 or 8 digits long, with the extra digits used for the +bank number:
+ ++ 7-digit (stella) code: baaaddc + b = bank (0 to $f) + aaa = address - $f000 + dd = data + c = count - 1 + + 8-digit (stella) code: bbaaaddc + bb = bank (0 to $ff) + aaa = address - $f000 + dd = data + c = count - 1 ++ +
Here are a few cheat codes I've found:
+ ++Pitfall (standard Cheetah codes): + 5b0ea1 - infinite lives + 723ea1 - infinite time + aa5??0 - set starting level, ?? = 01 to ff (d0 is kinda neat) + +Battlezone (Stella extended codes): + 1236ea1 - infinite lives + +Ms Pac-Man (Stella extended codes): + 108fea1 - infinite lives ++ +
The next release of Stella (2.1 or 3.0) will contain a much nicer +user interface for managing cheat codes, along with a database +of cheats. If you've found any new cheats, please send them to me +(atari@hardcoders.org), so I can include them in the database. Ideally, +I'd like to collect at least infinite lives/time cheats for every +game listed in stella.pro.
+ +Enjoy!
+ ++-- +B. Watson ++ +